Publish installers to /installers/uv/latest on the mirror (#18725)

.github/workflows/publish-mirror.yml

@@ -44,3 +44,18 @@ jobs:
             --cache-control "public, max-age=31536000, immutable" \
             artifacts/ \
             s3://${R2_BUCKET}/github/$PROJECT/releases/download/$VERSION/
+      - name: "Upload latest installers to R2"
+        if: ${{ !fromJson(inputs.plan).announcement_is_prerelease }}
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.MIRROR_R2_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.MIRROR_R2_SECRET_ACCESS_KEY }}
+          AWS_ENDPOINT_URL: https://${{ secrets.MIRROR_R2_CLOUDFLARE_ACCOUNT_ID }}.r2.cloudflarestorage.com
+          AWS_DEFAULT_REGION: auto
+          R2_BUCKET: ${{ secrets.MIRROR_R2_BUCKET_NAME }}
+        run: |
+          for installer in uv-installer.sh uv-installer.ps1; do
+            aws s3 cp --output table --color on \
+              --cache-control "public, max-age=300" \
+              "artifacts/${installer}" \
+              "s3://${R2_BUCKET}/installers/uv/latest/${installer}"
+          done